Workers deny rudeness after day out for Americans (3,7)
I believe the answer is:
new yorkers
'americans' is the definition.
(New Yorker is an example)
'workers deny rudeness after day out' is the wordplay.
'workers' becomes 'pliers' (ply means to work steadily).
'deny' is a deletion indicator.
'rudeness' becomes 'lip' (lip can informally mean insolence or disrespect).
'after' is a charade indicator (letters next to each other).
'day out' becomes 'newyork' (I am not sure about this - if you are sure you should believe this answer much more).
'pliers' with 'lip' taken out is 'ers'.
'ers' put after 'newyork' is 'NEW YORKERS'.
'for' is the link.
Can you help me to learn more?
(Other definitions for new yorkers that I've seen before include "city folk" , "Big Apple residents" , "people from Manhattan?" .)